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Kawi Jennifer J University of Nevada, Las Vegas, USA - - 2014
Knee osteoarthritis (OA) affects approximately 1 in 10 adults in the United States, with higher prevalence in women, aggravated by increased weight. This quasi-experimental pilot study implemented an online self-management (SM) program for older overweight and obese women with knee OA combined with a two-arm progressive exercise trial (walking and ...
Bigliassi Marcelo M 1Group of Study and Research in Neuromuscular System and Exercise (GEPESINE); Center of Physical Education and Sports; State University of Londrina; Londrina; Paraná; Brazil. 2Department of Psychiatry, School of Medicine, Autonomous University of Madrid, Spain; Center for Brain Injury Rehabilitation (CRECER), Seville, Spain; 3Department of Physical Education, North University of Paraná, - - 2014
This research investigated the effects of music and its time of application on a 5 km run. 15 well-trained, male long-distance runners (24.87 ± 2.47 years; 78.87 ± 10.57 kg; 178 ± 07 cm) participated in the present study. Five randomized experimental conditions during a 5 km run on an ...
Biscarini Andrea A Department of Experimental Medicine, University of Perugia, Perugia, Italy - - 2014
A number of research studies provide evidence that hamstring cocontraction during open kinetic chain knee extension exercises enhances tibiofemoral (TF) stability and reduces the strain on the anterior cruciate ligament. To determine the possible increase in hamstring muscle coactivation caused by a voluntary cocontraction effort during open kinetic chain leg-extension ...
Jennifer L Collins C Texas Tech University Health Sciences Center, Lubbock, TX. Electronic address: - - 2014
This is a pilot study regarding the use of mobile technology and short message service (SMS) for diet and exercise among rural Mexican American adolescents (RMAA). Authors used convenience sampling to recruit RMAA seeking care at a rural healthcare clinic and conducted three focus groups (n=12). Content analysis was used ...
Gao Ya Y Department of Endocrinology, The Second Hospital of An Hui Medical University, Hefei, - - 2014
Objective : Visfatin is a recently discovered adipocytokine that contributes to glucose and obesity-related conditions. Until now, its responses to the insulin-sensitizing agent metformin and to exercise are largely unknown. We aim to investigate the impact of metformin treatment and/or swimming exercise on serum visfatin and visfatin levels in subcutaneous ...
Haykowsky Mark J MJ Faculty of Rehabilitation Medicine, University of Alberta, Edmonton, Alberta, - - 2014
Exercise intolerance is the primary chronic symptom in heart failure with preserved ejection fraction (HFpEF), the most common form of heart failure in older patients; however its pathophysiology is not well understood. Recent data suggest that peripheral factors such as skeletal muscle (SM) dysfunction may be important contributors. Therefore, 38 ...
Winocur Gordon G Baycrest Centre, Rotman Research Institute, 3560 Bathurst St, Toronto, Ontario, Canada, M6A 2E1, - - 2013
Chemotherapy, used for the treatment of cancer, often produces cognitive impairment that has been related to suppression of neurogenesis. Physical exercise, which promotes neurogenesis, is known to improve cognitive function in neurologically challenged animals and humans. It is unknown whether exercise similarly protects against chemotherapy-induced cognitive impairment and whether recovery ...
Lavin K M - - 2013
Respiratory muscle fatigue can negatively impact athletic performance, but swimming has beneficial effects on the respiratory system and may reduce susceptibility to fatigue. Limiting breath frequency during swimming further stresses the respiratory system through hypercapnia and mechanical loading and may lead to appreciable improvements in respiratory muscle strength. This study ...
Engel Roger M - - 2013
The purpose of this preliminary study was to demonstrate the feasibility of a study that measures the short-term effects of a course of manual therapy (MT) and exercise (Ex) in people with moderate chronic obstructive pulmonary disease (COPD). Fifteen participants (9 males; mean age, 56.1 years), with moderate COPD (mean ...
Mendiguchia Jurdan - - 2013
The aim of this study was to investigate the effects of the Nordic hamstring exercise on the biceps femoris long head (BFlh), biceps femoris short head (BFsh), semitendinosus (ST) and semimembranosus (SM) muscles. The Nordic hamstring strengthening exercise has been widely used in injury prevention, yet not much is known ...
Assumpção Claudio O - - 2013
The purpose of this study was to investigate the influence of exercise order on one-repetition maximum (1-RM) and ten-repetition maximum (10-RM) strength gains after 6 weeks of resistance training (RT) in trained men. Sixteen men were randomly assigned into two groups based on the order of exercises performed during training sessions: ...
Mendiguchia Jurdan - - 2013
ABSTRACT: Mendiguchia, J, Garrues, MA, Cronin, JB, Contreras, B, Los Arcos, A, Malliaropoulos, N, Maffulli, N, and Idoate, F. Nonuniform changes in MRI measurements of the thigh muscles after two hamstring strengthening exercises. J Strength Cond Res 27(3): 574-581, 2013. Although many different hamstring strengthening exercises exist, the effect on ...
Colombo Rafael - - 2013
Pulmonary arterial hypertension (PAH) induced by monocrotaline (MCT) is an experimental protocol of right heart failure. We analyzed the role of exercise training on the right ventricle structure and function, pulmonary artery remodeling, and GSK-3β expression. Rats were divided among the following groups: sedentary control (SC), sedentary monocrotaline (SM), trained ...
Balsamo Sandor - - 2013
The purpose of this study was to analyze the effects of resistance training (RT) order on number of repetitions, total training volume, ratings of perceived exertion (RPE), and the lactate response in male adolescents. Twelve adolescents (age: 15.7 ± 1.4 yrs) completed two RT sessions in a counterbalanced crossover design: ...
Plessas I N - - 2012
The disease complex Chiari-like malformation (CM) and syringomyelia (SM) has been associated with the development of neuropathic pain (NeP), and commonly affects Cavalier King Charles spaniels (CKCS). This prospective cohort study followed 48 CKCSs with CM and/or SM and clinical signs suggestive of NeP for a period of 39 (±14.3) ...
Layton Aimee M - - 2012
The purpose of this study was to compare simultaneous measurements of tidal volume (Vt) by optoelectronic plethysmography (OEP) and spirometry during a maximal cycling exercise test to quantify possible differences between methods. Vt measured simultaneously by OEP and spirometry was collected during a maximal exercise test in thirty healthy participants. ...
Phillips Kristin M - - 2012
Although exercise may be used by some to decrease distress, little is known about how it may contribute to stress management (SM) among patients receiving chemotherapy. We evaluated whether exercise separately or in combination with SM training is effective at increasing perceived ability to manage stress. Patients receiving chemotherapy (N = 391) ...
Gibson Bradley S - - 2012
There has been growing interest in using adaptive training interventions such as Cogmed-RM to increase the capacity of working memory (WM), but this intervention may not be optimally designed. For instance, Cogmed-RM can target the primary memory (PM) component of WM capacity, but not the secondary memory (SM) component. The ...
Reid Machar - - 2012
ABSTRACT:: The aim of this study was to investigate the effect of court surface (clay v hard-court) on technical, physiological and perceptual responses to on-court training. Four high-performance junior male players performed two identical training sessions on hard and clay courts, respectively. Sessions included both physical conditioning and technical elements ...
Gilbert Jeffrey S JS Department of Physiology and Pharmacology, University of Minnesota Medical School, Duluth, MN, USA. - - 2012
Although exercise during pregnancy is generally recommended and thought to be beneficial to mother and fetus, the nature of the adaptations to exercise during pregnancy and how they may be beneficial remain poorly understood. Recent studies suggest that exercise may stimulate expression of several cytoprotective and pro-angiogenic molecules such as ...
Field Tiffany - - 2012
In this review of recent research on prenatal exercise, studies from several different countries suggest that only approximately 40% of pregnant women exercise, even though about 92% are encouraged by their physicians to exercise, albeit with some 69% of the women being advised to limit their exercise. A moderate exercise ...
Isacco Laurie - - 2012
Oral contraception (OC) and energy intake may play a role in fuel selection during exercise. The aim of this study was to investigate the effect of OCs (OC+ vs. OC-) in fed and fasting conditions on substrate oxidation and metabolic and hormonal responses in women during exercise. Substrate oxidation (respiratory ...
Teunissen L P J - - 2012
Core temperature measurement with an ingestible telemetry pill has been scarcely investigated during extreme rates of temperature change, induced by short high-intensity exercise in the heat. Therefore, nine participants performed a protocol of rest, (sub)maximal cycling and recovery at 30 °C. The pill temperature (T(pill)) was compared with the rectal ...
Isacco Laurie - - 2012
During exercise, substrate utilization plays a major role in performance and disease prevention. The contribution of fat and carbohydrates to energy expenditure during exercise is modulated by several factors, including intensity and duration of exercise, age, training and diet, but also gender. Because sex hormone levels change throughout a woman's ...
Vaiksaar Sille - - 2011
Eight female rowers (M age = 21.0 yr., SD = 2.8), using a monophasic oral-contraceptive pill, performed a 1-hr. rowing ergometer test (intensity: 70% VO2max) during the active-pill and non active-pill phases of the oral contraceptive cycle. No significant differences were found in mean energy expenditure, oxygen consumption, respiratory exchange ...
Bailey Stephen J - - 2011
: The purpose of this study was to investigate the influence of pacing strategy on pulmonary V˙O2 kinetics and performance during high-intensity exercise. : Seven males completed 3- and 6-min bouts of cycle exercise on three occasions with the bouts initiated using an even-start (ES; constant work rate), fast-start (FS), ...
Siegler Sorin - - 2011
Controlled laboratory testing using a single-group, prospective, repeated-measures design. To compare the material properties of a hyperelastic athletic tape to a conventional tape and to compare the passive ankle support of these tapes before and after exercise. The near-linear material properties of conventional athletic tape may interfere with ankle motion, ...
Wyatt Frank B - - 2010
The purpose was to compare a mathematical model of oxygen uptake and bioenergetic systems to an experimental protocol. Twelve (N = 12) noncyclists (NC), age (21.8 ± 1.4 years), and 8 (N = 8) cyclists (C), age (30.5 ± 5.7 years), were subjects. All subjects signed an informed consent. Oxygen ...
McLean Scott P - - 2010
During gait, humans choose a combination of step length and step rate that minimizes V˙O2. However, little work has been reported on the existence of such optimization in swimming. The purpose of this study was to examine the manipulation of stroke rate on V˙O2 in submaximal, constant speed freestyle swimming. ...
DiMenna Fred J - - 2010
We used near-infrared spectroscopy (NIRS) to test the hypothesis that body position alters the sigmoidal response profile of muscle fractional O(2) extraction (estimated using deoxy[Hb+Mb]) during incremental cycle exercise. Seven male subjects (mean±SD age 32±13 years) completed a ramp incremental cycling test to exhaustion (30W/min) in both the supine and ...
Gempp Emmanuel - - 2010
Scuba divers are at risk of decompression sickness due to the excessive formation of gas bubbles in blood and tissues following ascent, with potentially subsequent neurological injuries. Since nonprovocative dive profiles are no guarantor of protection against this disease, novel means are required for its prevention including predive procedures that ...
Bailey Stephen J - - 2010
Fatigue of the respiratory muscles during intense exercise might compromise leg blood flow, thereby constraining oxygen uptake (Vo(2)) and limiting exercise tolerance. We tested the hypothesis that inspiratory muscle training (IMT) would reduce inspiratory muscle fatigue, speed Vo(2) kinetics and enhance exercise tolerance. Sixteen recreationally active subjects (mean + or ...
Siqueira Ana Cristina B - - 2010
This study addressed whether hyperoxia (HiOX=50% O2), compared to normoxia, would improve peripheral muscle oxygenation at the onset of supra-gas exchange threshold exercise in patients with chronic obstructive pulmonary disease (COPD) who were not overtly hypoxemic (resting Pa O₂> 60 mmHg ). Despite faster cardiac output and improved blood oxygenation, ...
Farrar Ryan E - - 2010
In recent years, kettlebells have re-emerged as a popular training modality for the conditioning of athletes. We sought to quantify the aerobic challenge of one popularly recommended kettlebell workout. Ten college-aged men (age = 20.8 +/- 1.1 years, height = 179 +/- 3 cm, body mass = 77.3 +/- 7.7 ...
Wood Rachel E - - 2010
PURPOSE: The purpose of this study was to determine whether adiposity affects the attainment of (.)VO2max. METHODS: Sixty-seven male and 68 female overweight (body mass index (BMI) = 25-29.9 kg.m) and obese (BMI > or = 30 kg x m) participants undertook a graded treadmill test to volitional exhaustion (phase ...
Simão Roberto R Physical Education Post-Graduation Program, Universidade Federal do Rio de Janeiro , Rio de Janeiro, - - 2010
Traditional exercise order dictates large muscle group or multijoint exercises should be performed before small muscle group or single joint exercises. The purpose of this study was to examine the influence of exercise order on strength and muscle thickness (MT) in untrained men after 12 weeks of linear periodized resistance ...
Grassi Bruno - - 2009
The aim was to identify additional noninvasive tools allowing to detect and to quantify the metabolic impairment in patients with mitochondrial myopathies (MM) or McArdle's disease (McA). Kinetics of adjustment of pulmonary oxygen uptake (VO2 kinetics) during transitions to constant-load moderate-intensity cycle ergometer exercise were determined on 15 MM, 8 ...
Germonpr? Peter - - 2009
INTRODUCTION: The preconditioning of divers to reduce post-dive decompression sickness (DCS) has gained increased interest in diving medical research over the last few years. The beneficial effects of physical exercise, oxygen breathing, hyperbaric exposure, heat exposure, hyperhydration, or nitroglycerin administration before the dive are only a few examples of ongoing ...
Lee Hui-Chieh - - 2009
Deep sea diving might cause a tremendous physical or psychological stress to the divers. The present study aims to evaluate the stress response to a simulated wet dive in Navy divers. Nineteen Navy divers took part in this study when they were undergoing annual deep dive training. Ten divers were ...
Hughson Richard L - - 2009
Oxygen uptake has been studied in the transitions between rest and exercise for more than 100 years, yet the mechanisms regulating the rate of increase in oxidative metabolism remain controversial. Some of the controversy is a consequence of incorrect interpretations of kinetic parameters describing amplitude and time constant relationships, whereas ...
Savage Patrick D - - 2009
PURPOSE: A primary goal of cardiac rehabilitation (CR) exercise is to increase cardiopulmonary fitness. The aim of this study was to identify characteristics of CR participants who fail to improve peak oxygen uptake (peakV(O(2))). METHODS: The study cohort included 385 consecutive patients with directly measured peakV(O(2)) prior to and upon ...
Bailey Stephen J - - 2009
Pharmacological sodium nitrate supplementation has been reported to reduce the O2 cost of submaximal exercise in humans. In this study, we hypothesized that dietary supplementation with inorganic nitrate in the form of beetroot juice (BR) would reduce the O2 cost of submaximal exercise and enhance the tolerance to high-intensity exercise. ...
Wang Jong-Shyan - - 2009
Phagocytosis and oxidative burst are critical host defense mechanisms in which neutrophils clear invading pathogens. Clearing phagocytic neutrophils by triggering apoptosis is an essential process for controlling inflammation. This study elucidates how various exercise bouts with/without hypoxia affected neutrophil bactericidal activity and subsequent apoptosis in humans. Fifteen sedentary males performed ...
Castagna Olivier - - 2009
Oxygen pre-breathing is routinely employed as a protective measure to reduce the incidence of altitude decompression sickness in aviators and astronauts, but the effectiveness of normobaric oxygen before hyperbaric exposure has not been well explored. The objective of this study was to evaluate the effect of 30-min normobaric oxygen (O(2)) ...
Pontier Jean-Michel - - 2009
INTRODUCTION: It has been suggested that repeated compression-decompression cycles reduce diver susceptibility to decompression sickness (DCS). This study examined whether intensive scuba dive training would reduce bubble formation and modulate endothelial function as shown by skin circulation. METHODS: There were 22 military divers who were studied before and after a ...
Hettinga Florentina J - - 2009
PURPOSE: Limited research has been done on the .VO2 response to time trial exercise in the supramaximal domain or during free range exercise typical of competition. The present study was designed to measure and to model the .VO2 response during supramaximal time trial exercise. METHODS: Well-trained cyclists (n = 9) ...
Matthews Philip G D - - 2008
Unlike all other diving insects, backswimmers of the genus Anisops can exploit the pelagic zone by temporarily achieving near-neutral buoyancy during the course of a dive. They begin a dive positively buoyant due to the large volume of air carried in their ventral air-stores, but rapidly enter a protracted period ...
Peoples Gregory E - - 2008
Dietary omega-3 polyunsaturated fatty acids (PUFAs) are readily incorporated into heart and skeletal muscle membranes where, in the heart, animal studies show they reduce O2 consumption. To test the hypothesis that omega-3 PUFAs alter O2 efficiency in humans, the effects of fish oil (FO) supplementation on O2 consumption during exercise ...
Burnley, Mark
We hypothesized that the elevated primary O2 uptake (O2) amplitude during the second of two bouts of heavy cycle exercise would be accompanied by an increase in the integrated electromyogram (iEMG) measured from three leg muscles (gluteus maximus, vastus lateralis, and vastus medialis). Eight healthy men performed two 6-min bouts ...
Shykoff B E - - 2008
Pulmonary effects of prolonged mild intermittent underwater cycle ergometer exercise were assessed after single and repeated four-hour dives to 12 feet. With air, five daily dives (surface interval [SI], 20 hours), and with 100% oxygen, single dives, five daily dives, and afternoon-morning dives (SI, 15 hours) were conducted. Air divers ...
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